package com.itheima.reggie.common;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.*;
import java.sql.SQLException;


/*全局异常处理*/
@ResponseBody//将返回值R对象转换为json的格式的数据返回个页面
@Slf4j//日志
@ControllerAdvice(annotations = {RestController.class, Controller.class})//指定拦截那些控制器
public class GlobalExceptionHandler {
    /*异常处理方法1*/
 /*   @ExceptionHandler(SQLIntegrityConstraintViolationException.class)
    public R <String> exceptionHandler(SQLIntegrityConstraintViolationException ex){
        log.error(ex.getMessage());
        if (ex.getMessage().contains("Duplicate entry")){
            String[]split=ex.getMessage().split("");
            String msg=split[2]+"用户名已存在";
            return R.error(msg);
        }return R.error(("未知错误"));
    }
*/
    @ExceptionHandler(SQLException.class)
    public R<String> exceptionSQLHandler(SQLException ex) {
        log.error(ex.getMessage());
        if (ex.getMessage().contains("Duplicate entry")) {
            String[] split = ex.getMessage().split("");
            return R.error("数据库异常" + split[2] + "账号已存在");
        } else if (ex.getMessage().contains("Data too long")) {
            /*数据范围超长*/
            return R.error("数据库异常,数据长度超过指定长度范围");
        }
        return R.error("未知错误");
    }
    /*异常处理的方法*/
    @ExceptionHandler(CustomException.class)
    public R<String> exceptionSQLHandler(CustomException ex) {
        log.error(ex.getMessage());
        return R.error(ex.getMessage());
    }

}
